NOTE: Gray indicates insufficient data or a suppressed estimate.
Zip codes in the northwest suburbs around Elgin and parts of Aurora exhibit some of the highest uninsured rates in the metro, with several areas exceeding 20–25%, likely reflecting concentrations of immigrant and working-class populations with limited employer-sponsored coverage. Central Chicago neighborhoods west of The Loop, particularly around Cicero and adjacent West Side zip codes, also display elevated uninsured rates in the 15–25% range, contrasting sharply with the near-north lakefront and affluent western suburbs like Naperville and Bolingbrook, where rates generally fall below 5%. The southern exurbs and far south suburban zip codes show a mixed pattern, with pockets of moderate uninsurance interspersed among areas with minimal data coverage.
Data: U.S. Census Bureau, 2023 ACS
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